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https://github.com/DSheirer/sdrtrunk.git
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[WIP]Updates the MDC1200 decoder to use the new AFSK1200 decoder
class. Adds Demodulator Viewer FX pane for MDC1200 decoder.
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@@ -1,77 +1,76 @@
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/*******************************************************************************
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* SDR Trunk
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* Copyright (C) 2014 Dennis Sheirer
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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* sdr-trunk
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* Copyright (C) 2014-2018 Dennis Sheirer
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*
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* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with this program.
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* If not, see <http://www.gnu.org/licenses/>
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*
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******************************************************************************/
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package io.github.dsheirer.dsp;
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import io.github.dsheirer.bits.IBinarySymbolProcessor;
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import io.github.dsheirer.sample.Listener;
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public class NRZDecoder implements Listener<Boolean>
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public class NRZDecoder implements IBinarySymbolProcessor
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{
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public final static boolean MODE_NORMAL = true;
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public final static boolean MODE_INVERTED = false;
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private Listener<Boolean> mListener;
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private boolean mMode = MODE_NORMAL;
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private boolean mPrevious;
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public final static boolean MODE_NORMAL = true;
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public final static boolean MODE_INVERTED = false;
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/**
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* Non Return To Zero (NRZ) and NRZ Inverted (NRZ-I) Decoder.
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*
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* Use default constructor for NRZ output. Use the alternate constructor
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* with the MODE_INVERTED argument for NRZ-I output.
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*
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* Performs XOR of incoming bit with previous output and sends the result
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* to the registered listener.
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*/
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public NRZDecoder( boolean mode )
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{
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mMode = mode;
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}
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public NRZDecoder()
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{
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this( MODE_NORMAL );
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}
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public void dispose()
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{
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mListener = null;
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}
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private IBinarySymbolProcessor mListener;
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private boolean mMode = MODE_NORMAL;
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private boolean mPrevious;
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@Override
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public void receive( Boolean bit )
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/**
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* Non Return To Zero (NRZ) and NRZ Inverted (NRZ-I) Decoder.
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*
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* Use default constructor for NRZ output. Use the alternate constructor
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* with the MODE_INVERTED argument for NRZ-I output.
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*
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* Performs XOR of incoming bit with previous output and sends the result
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* to the registered listener.
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*/
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public NRZDecoder(boolean mode)
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{
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boolean result = mPrevious ^ bit;
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if( mListener != null )
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{
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mListener.receive( mMode ? result : !result );
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}
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mPrevious = result;
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mMode = mode;
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}
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public void setListener( Listener<Boolean> listener )
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{
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mListener = listener;
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}
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public void removeListener( Listener<Boolean> listener )
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{
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mListener = null;
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}
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public NRZDecoder()
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{
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this(MODE_NORMAL);
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}
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public void dispose()
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{
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mListener = null;
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}
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@Override
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public void receive(boolean symbol)
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{
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boolean result = mPrevious ^ symbol;
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if(mListener != null)
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{
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mListener.receive(mMode ? result : !result);
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}
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mPrevious = result;
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}
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public void setListener(IBinarySymbolProcessor listener)
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{
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mListener = listener;
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}
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public void removeListener(Listener<Boolean> listener)
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{
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mListener = null;
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}
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}
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